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4 years ago

For an independent-measures anova comparing four treatment conditions, dfbetween = 3.

1 answer:

3 0

<span>For an independent-measures anova comparing four treatment conditions, dfbetween = 3.

TRUE.

The dfbetween is given by the number of treatments minus 1.
</span>

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Help please ^^ I am confused

Alika [10]

Answer:

180

Step-by-step explanation:

4 x 28 + 64 = 176 round up to 180

5 0

3 years ago

Prove that sin(Π÷14)sin(3Π÷14)sin(5Π÷14)=2

Oxana [17]

Answer:

The correct prove will be:

$sin(\frac{\pi }{14})sin(\frac{3\pi }{14})sin(\frac{5\pi }{14})$ $= \frac{1}{8}$

Step-by-step explanation:

$sin(\frac{\pi }{14})sin(\frac{3\pi }{14})sin(\frac{5\pi }{14})$

Multiply and Divide by $2cos(\frac{\pi }{14})$

= $\frac{2sin(\frac{\pi }{14})cos(\frac{\pi }{14})sin(\frac{3\pi }{14})sin(\frac{5\pi }{14})}{2cos(\frac{\pi }{14})}$

⇒ Let $\frac{\pi }{14}$ = Ф and 7Ф = $\frac{\pi }{2}$

= sin2Ф sin3Ф sin5Ф ÷ 2cosФ

= 1/2(2sin2Фsin5Ф)sin3Ф ÷ 2cosФ

= (cos3Ф - cos7Ф) sin3Ф ÷ 4cosФ

= 1/2(2cos3Ф sin3Ф) ÷ 4cosФ ∵cos7Ф = 0

= sin6Ф ÷ 8cosФ

= sin(7Ф - Ф) ÷ 8cosФ

= (sin7ФcosФ - cos7ФsinФ) ÷ 8cosФ ∵sin7Ф = 1

= cosФ ÷ 8cosФ

= 1/8

Hence, The correct prove will be:

$sin(\frac{\pi }{14})sin(\frac{3\pi }{14})sin(\frac{5\pi }{14})$ $= \frac{1}{8}$

Keywords: prove, sinФ, cosФ

Learn more about trigonometric functions from brainly.com/question/7331447

#learnwithBrainly

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3 years ago

Can anyone help with this probelm???

patriot [66]

We need to look at 2 similar triangles

1) big one: legs - a,b, and hypotenuse - c

2)small one: legs - h,s, and hypotenuse - b.

Corresponding sides:

hypotenuse - c and hypotenuse - b,

big leg - b and big leg - s,

small leg - a, and small leg h.

?(/b(big leg, big triangle)= b(hypotenuse, small triangle )/s (big leg, small triangle)

? should be hypotenuse of the big triangle, c.

Answer is second one c.

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3 years ago

A Price of a sweater was reduced from $40 to $25. By what percentage was the price of the sweater reduced?

scZoUnD [109]

Answer:

65%

Step-by-step explanation:

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3 years ago

Solve, using linear combination.

Anastaziya [24]

The answer is B.) (2,0)

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3 years ago